Hydraulic apparatus for opening, closing, and locking doors, and the like



Oct. 20, 1942- R. E. PETERSON HYDRAULIC APPARATUS FOR OPENING, CLOSING, AND LOCKING DOORS AND THE LIKE Filed Feb, 24, 1940 3 Sheets-Sheet 1 Oct. 20, 1942. R PETERSON v 2,299,345

HYDRAULIC APPARATUS FOR OPENING, CLOSING, AND LOCKING DOORS AND THE LIKE Filed Feb. 24, 1940 3 Sheets-Sheet 2 Awavro:

Mam-

Oct. 20, 1942. R PETERSQN 2,299,345

HYDRAULIC APPARATUS FOR OPENING, CLOSING, AND

LOCKING DOORS AND THE LIKE Filed Feb. 24, 1940 3 Sheets-Sheet 3 M Mam- Patented Oct. 20, 1942 UNITED stars r 'l QFFICE HYDRAULIC APPARATUS FOR OPENING, CLOSING, AND LOCKING DOORS, AND THE LIKE Robert E. Peterson, Los Angeles, Calif., assignor to Sco-Peet Manufacturers, Inc., a corporation of California 2 Claims.

My invention relates to the hydraulic apparatus used for closing, opening, and locking the doors, especially the garage doors, and more particularly to the special construction of the apparatus, which is simple and inexpensive to manufacture and adapted to be used effectively by the use of any water system, preferably of low pressure.

Manifestly, an object of my invention is to provide said apparatus with a suitable door controlling means which holds the said door in the open or closed position, and which is also provided with the locking means so that when the said door is closed, it is held also in locked position to prevent its unauthorized opening.

Another object of my invention is to provide said apparatus with a suitable control valve means which is associated with the said door controlling means and which is for controlling the fluid flow through the said apparatus during its opening, closing, and locking operation.

Further object of my invention is to provide said apparatus with a suitable remote control means which is substantially associated with the said valve and its controlling means, so that to travel and thereby reducing the volume of n the fluid which is necessary for its operation.

Other and further objects and advantages of my invention, as will hereinafter more fully appear, I attain by the construction herein shown on the drawings and described in the specification, forming a part of my application.

Reference is had to the accompanying drawings, in which the similar reference characters denote the similar parts.

In the drawings:

Fig. 1 is the perspective and diagrammatical View of the hydraulic apparatus, the stroke reducticn, the control valve means and the remote control means, as it may be applied to the garage door.

Fig. 2 is the vertical and longitudinal and partly fragmentary view of the control cylinder of the hydraulic apparatus, showing the position of the piston and the piston speed control, associated therewith.

Ill

Fig. 3 is the transverse crossectional view of the cylinder, taken on the line 33, of the Fig. 2.

Fig. 4 is the transverse crossectional view of the cylinder bracket, taken on the line l l of the Fig. 2.

Fig. 5 is the transverse crossectional view of the cylinder bracket extension, taken on the line 55 of the Fig. 2. I

Fig. 6 is the transverse crossectional view of the cylinder bracket guide, taken on the line 5-6 of the Fig. 2.

Fig. '7 is the fragmentary side elevational view of the door control rod and the lock member, showing the door in locked position.

Fig. 8 is the fragmentary front elevational view of the door control and the lock member, taken from the right of the Fig. 7.

Fig. 9 is the fragmentary perspective view of the stroke control guide and the door control rod.

Fig. 10 is the horizontal crossectional view of the control valve for controlling the fluid flow therethrough and for controlling and regulating the movement of the piston in the said hydraulic cylinder of the apparatus, taken on the line Ill-Ill, of the Fig. 11, showing it in neutral position, and showing the remote control connection.

Fig. 11 is the transverse crossectional view of the said control valve as shown in Fig. 10, and taken on the line l|--H of the Fig, 10.

Fig. 12 is the transverse crossectional view of the control valve showing its construction and showing the valve fluid passages with valves in place in neutral position.

Fig. 13 is the fragmentary crossectional view of the control valve, slightly enlarged, and showing the valve fluid passages in operative posi-- tion.

Fig. 14 is the fragmentary side crossectional and elevational view of the valve passage, taken on the line ll4 of the Fig. 12.

Fig. 15 is the fragmentary crossectional view of the center valve control and valve actuator which is operable by the remote valve control, taken from Fig. 10 and showing it in operative position.

Fig. 16 is the fragmentary transverse crossectional view of the center valve actuator, taken on the line lt-lfi, of the Fig. 15.

Fig. 17 is the transverse crossectional view of the oscillating valve member and the rod of the actuator ta zen on the line I1ll of the Fig. 15, showing it slightly enlarged.

Fig. 18 is the front side, and elevational view of the control valve taken in the direction of the arrows I8-I8 in the Fig. 10.

Fig. 19 is the side elevational view of the control valve taken oppositely in position to the Fig. 18.

Fig. 20 is the horizontal crossectional view of the remote valve and control.

Fig. 21 is the partly fragmentary and partly end. elevational View of the remote valve and control, taken from the left of the Fig. 20.

Fig. 22 is the transversely vertical cross-sectional View of the remote valve and control, taken on the line 22-22 of the Fig. 20.

Fig. 23 is the transversely Vertical cross-sectional view of the remote valve and control,

, taken on the line 23-23 of the Fig. 20.

Fig. 24 is the transverse cross-sectional view of the remote valve control housing, showing the lock in place, and taken on the line 24-24 of the Fig. 23.

Describing my invention more in detail, in its broader aspects, said invention comprises a cylinder 2, the cylinder head member 4 which is positioned at the outer cylinder end 6 while the opposite cylinder end B is provided with a cylinder bracket I0.

The said cylinder bracket Ii! comprises a housing having a speed control chamber I2 and a packing gland chamber It the end of which is terminating with the bracket clamp It to which the guiding pipe I8 is attached and which, at its upper section is'provided with a longitudinal slit 2B, the purpose of which will be presently described.

It may be noted that the said cylinder 2 enclosed by means of the said cylinder head 4 at one end and the said cylinder bracket III at the other, forms a cylinder chamber 22 which is divided into a front and rear compartments 24 and 26 respectively, by means of the piston head member 28, comprising a pair of piston cups 3% which are divided by means of the piston washer 32 in the center, while the outer sides are-provided with suitable end washers 34, having a spacing collar 35 at the inner end, as

shown.

The said piston head 28 is held in place and upon the piston rod end 38 by means of a suitable lock nut 40 which forces said collar 35 against the piston rod shoulder 42, which is supported in place by means of a suitable retaining nut member M and which encloses and restricts the size of the hole 46 wherein the plunger 48 is positioned and which is supported in place by means of a suitable compression spring member 59.

Said plunger 43 is slidably positioned within said hole 46, having a suitable plunger extension 52 extending outwardly, which may be of any desired length most adaptable in practice, and having its end 54 provided with the stopper 56, which comprises a flange 58 adapted for enclosing the raised surface 60 at the inner side of the said cylinder head 4, and also having a plug 62 terminating with a suitable conical point 64 provided with a suitable slot 66 as shown, which is for guiding and for restricting the fluid flow through the passage 68, and the pipe 13, during the frontward movement of the said piston, and at least two inches before the end of the stroke.

It may be noted, that when the said piston 28 moves in forward direction, the spring 56 holds the said plunger 52 in place and against the retaining nut 44 until the stopper 56 reaches the passage 68 and the flange 53 bears against the surface 60 which causes the fluid passage area to become restricted and thereby retarding the flow of the fluid, slowing down the piston movement.

For retarding the fluid flow when the piston 28 moves in the rearward direction, the said collar 36 is provided with outer grooves for receiving thereon one end of a suitable spring I2 while the other spring end engages the grooves of the compensating collar I4 which is loosely mounted'upon the piston rod I6, having its shank I8 adapted for restricting the area of the subchamber which is smaller than the control chamber I2, and, it may be noted, that because said collar I4 is loosely mounted upon the piston rod end 38, the fluid will pass around the said shank I8 until the edge of said collar will abut the chamber edge 8| whereupon the piston head 28 abutting against the stop collar 82 at the.

inner side 84 of said cylinder bracket flange 86 will prevent further flow of said fluid into the sub-chamber 8i] and the pipe 88 and also stopping the further movement of said piston head 23, in said cylinder 2.

In order to prevent a leakage of the fluid around the piston rod I6 the said packing gland chamber I 4 is provided with a suitable land packing 99, such as the Shervons packing which is held in place by means of the screwedin gland member 92,. having a suitable felt washer 94 placed at the base and held therein by means of the retaining washer 95 which is supported in position by the pipe end 98 of the guiding pipe I8 and which is held in place by means of screws I00.

The said piston rod I6 extends to any desired length most desirable in practice, having a suitable guiding collar I92 attached thereto which is provided With a boss member I64 extending upwardly and protruding through the said slot 20, also having a suitable screw I96 provided therein, as shown, for holding and maintaining said collar I02 in proper position.

In order to maintain the shortest possible piston stroke and therefore decreasing considerably the time limit required for moving the door I23 into closed or open position, as the case might be, said apparatus is provided with a stroke reduction means I II which comprises a plurality of cross bars H2, each of which is pivotally inter-connected at their respective ends, as at H4, having their center sections provided with a pivot pin I Hi, excepting the cross bars H8 which are adapted to pivot about the screw member I previously mentioned and substantially connected to the said guiding collar I02, also, the end cross bars I2!) and I22 respectively are half the length as shown, of which, the end bars I20 at the front section, are pivotally connected to the stud member I24 of the bracket boss I26 and held in place by means of a nut I28, while the end bars I22 at the rear section, are pivotally connected to the suitable stud I39 of the sliding bushing I32, and which are mounted and held in place by means of a nut I34.

Obviously it may be noted, that the piston stroke is correlative to the extension of the front section cross bars and permissible by their length extending between the said stud member I 24 and the screw member I06, so that in operation, the remaining bars II2 will assume similar position and will extend a sufficient distance, sliding over the said guiding pipe I8, which will be proper for opening and closing the said door I08, then, in order to guide the said door into a position, the said apparatus is provided with a guiding rod I36 one end of which is flattened as at I38 and provided with a slot I40 and which is connected to the door bracket I42 while the opposite end I44 is provided with a slit I46 which is pivotally connected to the end I48 of the hinge plate I50, see Figs. 1, 7, 8, and 9, and of which the other end I52 is mounted upon the said stud I30 of the said sliding bushing I32 to which said end bars I22 are connected, as previously mentioned.

In order to hold said entire apparatus in place, which includes the said cylinder 2 and the pipe I8, the said bracket I is provided with a pair of hinge lugs I54 to which suitable braces I56 are attached and which are adapted for holding said cylinder in position, while the end section I58 of the said guiding pipe I8 is also supported in place by means of end braces I60, which similarly to the braces I56 are mounted upon the ceiling of the garage or any other place most adaptable in practice for holding the said apparatus when in operation.

Then in order to lock the said door I08 in place when same is in closed position, the door frame header I62 is provided with a suitable angle plate member I64 which is held in place by means of screws or bolts I66, see Figs. '7 and 8, having its angle edge I68 extending outwardly and adapted to overlap the extended end I of the guiding rod I36.

In operation, when the said rod I36 forces the door I68 to close and assuming a vertical position, the door bracket I42 holds the bar end I38 in place and the longitudinal slot I40 allows the said extended end I10 to move forward for lodging under the said angle edge I68, thus preventing lifting of the said door I08, unless the said extended end I10 i moved back by the guiding rod I30, however, because the fluid under pressure is present in the cylinder 2, retraction of the said extended end I10 becomes impossible and the said door I98 is held locked in place.

For actuating the said piston within said cylinder 2, in opening, closing and locking said door I08, a suitable control valve I12 is provided, which is enclosed within a suitable casing member I14, and because of its construction, it may, i

if so desired, be fastened upon the wall of the garage or in any other place most adaptable in practice, and to which, the fluid pipes 10 and 83 leading from said cylinder 2 are connected, having also the fluid inlet pipe I16 inter-connected with the auxiliary inlet pipe I13, also connected thereto is the fluid discharge pipe I80 with the auxiliary discharge pipe I82 leading therefrom and terminating with the fluid outlet pipe end i84 disposed at the outside section of the garage I86, as shown in Fig. 1.

In order to provide a control from a distance or from the outside of the said garage I86, the said valve I12 is provided with a remote control member I 68 disposed within the pipe housing I 90 and comprising a suitable push-button I92, also having a lock I94 for locking same to prevent an unauthorized opening of said door I00, and having a suitable conduit pipe I96 leading to the said control valve I12, as shown, the operation of which will be presently described.

The said control valve I12 consists of a fluid direction regulating member I98 which is operable by means of the segment member 200 and controlled by the segment finger member 202 of III the relay member 204 which inter-connects, by means of the fluid pipe 206, with the centralizing valve member 208 having a suitable centralizing rod 2I0 at all times in contact with the auxiliary rod member 2I2 and inter-connected with the rectifying bellows 2I4, which connects by means of the said conduit pipe I96 with the said remote control member I88.

The said fluid direction regulating member I98 comprises a housing 2I6 having a suitable fluid inlet chamber 2I8 which connects with the said inlet pipe I16, also having inter-connecting fluid passages 220 and 222 which lead to the fluid discharge chamber 224 and inter-connects with the discharge pipe I80, also, each of the said fluid passages 220 and 222 are connected with the fluid pipes 10 and respectively, also each of said passages are provided with suitable cover members 226 and 228, as shown in Fig. 12.

The said inlet chamber 2I8 at one side is pro vided with a valve seat 230 and a fluid passage 232 leading to the said fluid passage 220, while the opposite side of said chamber 2 i8 is provided With a valve insert 234 having the valve seat 236- and also a fluid passage 238 leading to the passage 222. The discharge chamber 224 is also provided with fluid passages 240 and 242 leading to the said passages 220 and 222 and each having a valve seat 244 and 246 respectively.

The inlet chamber 2 I8 is controlled by a suitable center valve member 243', comprising a pair of discs 250 held in place by means of the center rod member 252 each end of which is provided with a shouldered shank 254 adapted to receive thereon a regulating spring member 256, while the discharge chamber 224 is provided with a regulating valve 258, comprising a center boss member 260 having a pin 262 for engaging the slot 264 of the yoke 296 extending out of the valve rod 268 to which the said segment memher 290 is attached, and, the outer ends of said regulating valve 258 are provided with suitable valve discs 21%) and 212, each engaging the said valve seats 244 and 246 respectively and each having a guide pin 214 and 216 adapted for holding the said regulating spring members 256 in place and which are slidably positioned within the guide sockets 218 and 230 in the cover members 226 and 228.

As shown in Fig. 12, the length of the stem of the center valve member 243, in between the sections where the said spring members 256 are resting, is longer as compared with the stem length of the regulating valve 258, which is for the purpose to impose a greater tension upon said valve 248, during the operation of said regulating valve I98.

The said valve rod 268 below the yoke 266 is provided with an extension 282 which rests within a suitable socket 284 within the center of the said discharge chamber 224, and the upper section thereof is guided and held in place by means of a suitable packing retainer 236 held within a recess 288 and provided with a cup 299 wherein the packing 292 is placed and which is supported in place by means of the gland member 294, as shown in Fig. 11.

For the purpose to prevent the fluid restriction in chambers 220 and 222 the said regulating spring 256 is undercut and reduced in area at the end forming sides 296 and 298, which also provides a guide for it at the sides 299 see Fig. 14, also, in order to allow the said guide pins 214 and 216 to move freely within the guide sockets 218 and 288, the said guide pins are made out of the square stock having their corners 388 reduced to a size which is commensurate to the inside diameters of said sockets previously mentioned, and which because of construction will also help greatly in assembling and adjusting during the course of manufacture.

The segment member 288 is attached to the Y end 382 of the valve rod 268 by means of the set screw 384 and in order to hold the finger end 386 of the said finger member 282 in place, during its operation, the outer edge 388 is provided with a suitable retaining groove 3H3, allowing said finger end 386 to remain always in position, then, in order to turn said segment member 288 from one side to the other, as shown in Fig. 15, the said finger member 282 is provided with a spherical knob 3I2 which is disposed within a guide 3I4 supported in place by means of a plunger 3I6 having a head 3I8, which bears thereagainst while its stem 328 is supported by means of the compression spring member 322, as shown in Fig. 10.

The saidguide M4 is provided with a guide bushing 324 one end of which is provided with suitable thread 326 and screwed over the extension end 328 of the control cylinder piston member 338, while the opposite side thereof is provided with a packing cup 332 which is held in place by means of a washer 334 and a suitable screw 336 and enclosed within the cylinder member 338 one end of which is screwed into the boss 348 of the cover member 223 and the other is enclosed by means of the cylinder head member 342 having the passage 343 interconnecting the fluid pipe member 206, also, in order to retract the fiuid action which bears against the said piston member 338, a suitable retracting spring member 344 is provided as shown, which causes the said piston member 338 and the flnger member 282 to retract, further, in order to permit a sideward movement of the said finger member 282 the enclosing section 346 of the said boss 348 is provided with a sideward slot 348, see Figs. and 16, which guides and controls a sideward movement of the said finger member 262 allowing the finger end 386 to move to the ends 358 and 352 of the said segment member 288, as shown, the purpose and operation of which will be presently described.

The centralizing valve member 238 controls the position and the movement of the relay member 284 by means of the fluid passing therein, under pressure, through the interconnecting pipe 286 and the passage 343 into the relay valve chamber 354, said fluid passing into the pipe connection 353 and fluid passage 358 through the auxiliary inlet pipe I'I8 having the by-pass chamber 368 leading to the auxiliary discharge pipe I82.

The said centralizing valve 288' comprises a valve body 362 having a central fluid chamber 384 which interconnects the fluid inlet chamber 366 at one side, also the by-pass chamber 368 at the other side and the fluid passage 358 at the valve body connection 356 which is held in place and within a bracket hole 368 of the cover member 228 by means of a lock nut 318, while the opposite section of the said valve body 382 is provided with a threaded end 312, it being enclosed by means of the centralizing packing 314 having a metal ring 316 at the outside surface and held therein in place by means of a cap member 318, the center section of which is provided with a countersunk hole 388 adapted to receive therein the said centralizing rod member 2I8.

The by-pass chamber 368 is formed within the side valve discharge section member 382 which is screwed in place as at 384 and provided with a gasket member 386 at its joint, said bypass chamber 368 having a suitable fluid passage 388 considerably smaller in area, as shown, which leads to the said discharge pipe I82 and wherein the fluid passage is controlled by means of the conical end 388 of the valve plug 392. The inlet chamber 366 is formed within the valve inlet section 384 which is also screwed in place as at 396 having a suitable gasket 398 at its joint, and also having a suitable fluid passage 488 which is small in area for inter-connecting the inlet pipe I38 as shown, and wherein the fluid passage is controlled by means of the ball plug 482, preferably of resilient structure, the end of which is attached to the opposite end 484 of the said valve plug member 392.

The center section of the said valve plug member 392 is provided with a suitable center hole 486 wherein the ball end 488 of the centralizing rod 2I8 is positioned, and, passing through the centralizing packing member 314, said rod 2! being adapted to pivot at the point where it contacts and inter-connects the countersunk hole 388, and, since the said centralizing packing 314 is of resilient structure, therefore the proper position of the said rod 2H! and the prevention of fluid leakage is assured,

The outer end of the said centralizing rod 2I8 is also provided with a ball end 4I8 which engages a recess 4I2 of the auxiliary rod member 2I2, having in addition a suitable groove 4I3 which is for holding the centralizing spring member M4 in place, of which, its opposite end M6 is attached to the spring lug MB of the side cover 226.

The said auxiliary rod member 2I2 is slidably mounted within the bearing holes 428 formed out of the lugs 422 extending out of the side cover 226, said rod member 2I2 comprises a knurled end 424 at one end and a socket 426 at the other end, which is for the purpose to receive therein the plug member 428 of the rectifying bellows member 2I4 while the other end 438 of said bellows member 2 I4 is provided with a suitable connecting bushing 432 having a shank 434 which is conduit pipe I86 to be extended to any distance as in practice may be most desirable, as shown in Fig. 1.

The extended end 446 of the said pipe I83 is attached to the outer end of the bushing 448, it having a shoulder 458 which engages the slot 452 of the centralizing plate 454 and also having a threaded section 456 which is to receive a suitable lock nut 458 with which to hold it in proper position, see Figs. 20 and 21, while the other end of said bushing 448 is attached to the bellows 468 which is substantially a part of the said remote control member I88.

The extended end 462 of the said bellows 468 is provided with a suitable capper 464 having a shank 466 and a rounded end 463 which is slidably disposed within the center hole 418 of the locating plate member 412 and is positioned in close proximity to the abutment end 4% of the controlling rod 476.

As shown in Fig. 20, the entire mechanism of the said remote control member I58 is positioned within the pipe housing I53 also that the said centralizing plate 454 including the locating plate 412 are substantially of same diameter and are disposed within the inner diameter 4'53 of said pipe housing I90, and in close proximity to the pipe end 485 which is provided with a suitable spacing plate 482, as shown.

Then in order to hold the said plates and 412 respectively in proper position and in a proper distance from the said spacing plate 352, suitable spacing bushings 534 and 656 are provided therein which may be three in numb as shown, having a suitable stud member 585 pa therethrough, the ends of which are provided with nuts 436 adapted for holding the entire bellows mechanism in proper place and position.

The said pipe end 483 is enclosed by means of the lock housing member 556 which is attached thereto by means of rivets 552 or other suitable fastening means as in practice may be most desirable, said housing member 55 3 having suitable ribs 555 internally positioned therein of which the ends sections 555 are adapt ed to abut the said spacing plate 52 thereby holding it rigidly in place.

The outer end of the said housing 555 is rounded as at 558 having a center boss 5w extending outwardly and also having the lock boss 5I2 positioned at its side, see Fig. 23. The said center boss 5H] is provided at its interior side 5I4 with a counterbore 5I6 while its outside section is provided with a recess 5I5 thus forming a retaining wall 526 having a hole 522 in its center adapted to receive therein the shank 52d of the said push button member I92.

The said shank 524 is slidably engaged within said hole 522 having a suitable shoulder 523 which is fitted into said recess 558 adapted to hold the spring member 536 in place, while the interiorly disposed end 532 of the said shank 524 is provided with a groove 534 wherein the spring ring 536 is placed and the tip end 53'! having an end recess 538 adapted for receiving therein the point end 545 of the said controlling rod 416. i

It may be noted that because of the positions of the said point end 555 and the tip end 53? a suitable clearance 542 is provided therebetween, which is for the purpose to allow free angular movement of the said controlling rod 416, which at the abutment end 5'54 is provided with an undercut as at 545, and, to provide a clearance for the centralizing hole 555 in the spacing plate 482, also for maintaining its position, a suitable retaining spring member 5 33 is attached at the end 550 to the center section of said rod 416 while the opposite end 552 is connected to the bottom section 554 of said plate 482. When the said centralizing rod 416 is in normal position it is generall in the center, as shown in Fig. 20, and the tip end 531 and the end recess 533 is in line with the point end 549, so that the said tip end 531 of said push button I 92 may be engaged, and then, by pushing it inwardly the abutment end 414 may engage the rounded end 468 of shank 455 for actuating the said bellows 466.

The said centralizing rod 416, in normal position, is held downwardly by means of the said spring member 558 and it rests upon the lifting ill rod 556 and within the undercut 558, which is also for guiding said rod 476 when the cylinder lock I94 is operated, thus preventing the said point end 548 from engaging the recess 538 of the said push button tip end 537, and thereby preventing the operation of the apparatus by unauthorized persons unless the opening key is used in the said cylinder lock I64.

In order to hold the said lifting rod 556 in place when the said lock I96 is in unlocked position, that is in position to hold said rod 556 in line, as previously mentioned, the outer end 560 is provided with a grooved tip 562 which is attached to the end 55 3 of spring 566, while its other end is attached to the rod member 568, having the end 570 disposed within a boss 572 while the other rod end 514 is disposed within a suitable retaining hole (not shown) of the said spacing plate 482.

The other end 575 of the said lifting rod 556 attached to a lock plate member 536, as shown in Fig. 23, which is provided with a lug member 582, the end of which is placed within the hole 554 of the cylinder lock I94 and held therein in place by means of the pin 588, so that in turning said lock Hid out of the engaging slots 595, as shown in Fig. 24 the said lifting rod 556 engaging said centralizing rod 416, will hold it in a proper position, and thus allowing said push button I92 to engage same as previously mentioned."

In operation, when the lock key (not shown) is placed within said cylinder lock I94 and turned into a position causing the said lifting rod 556 to engage the centralizing rod 476, which thereupon it assumes a central position in line with the said tip end 537 and the recess 538 of the push button member I52, the entire mechanism comprising said remote control I68 is in readiness to function, so that by pushing said push button I92 inwardly, the said recess 538 and the point end 546 of the said centralizing rod 476 become engaged, causing the abutment end 414 to press upon the shank 466 which compresses the said bellows 46%] allowing the fluid positioned therein to move in a forward direction, then passing through the said conduit pipe I95 and causing the said rectifying bellows 2I4 to expand which will move the auxiliary rod member H2 in the same direction.

In moving said rod 2I2 the recess 4I2 engaging said ball end 4H] will pivot within the hole 360 of the cap member 318 thus causing the ball 458 to actuate the valve plug 392 which will cause the conical end 390 to close the passage 388 leading to the auxiliary discharge pipe I82, while the ball plug 452 in opening the fluid passage 40!] allows the water fiuid, under pressure, to enter the chamber 366 through the auxiliary inlet pipe I38 then passing into the passage 358 said water fluid entering the fluid pipe 266 and the passage 343 also the relay chamber 354 causes the piston member 332 to actuate.

In actuating the relay member 254, the said piston member 335 is forced outwardly carrying with it the guide bushing 324 until it reaches the enclosing section 346 of the surface of the boss member 3 10 and in its motion compressing the retracting spring member 344, also, in its movement the said piston member 330 forces the plunger 3I6 in the same direction, causing the plunger head 3I8 to bear against the spherical knob 3I2 which causes the finger end 306 of the finger member 252 to engage the retaining groove 3 I 6 and finally in its forward movement engaging the segment end 350 or 352 as the case might be, which turns the valve rod 268 and at the same with the stem of the regulating valve 258 the valve discs 210 and 212 will assume their respective positions in closing or opening the passages 240 or 242 and at the same time causing the regulating springs 256 to carry the center valve member 248 into a position for closing or opening the fluid passages 232 or 238, as the case might be.

Obviously it may be noted that the position of the said centralizing rod 2I0, supported in place by means of the spring M4, is at all times in position which prevents the fluid passage through the pipe I18 and the passage 400 into the chamber 366 which is closed by the ball plug 402, therefore the spring 344 when expanding its movement causes the piston member 330 to force the fluid out of the chamber 354 and through the pipe 206 forces said fluid into the passage 358 and the chamber 360 then allowing it to pass by the conical end 390 into the passage 388 and the auxiliary discharge pipe I82.

It may. be noted also, that the constant fluid pressure pressing past the ball plug 402 when actuated by the movement of the bellows 2 I4 and the centralizing rod 2I0, will hold the finger member 202 in a position which will also hold the segment end 350 of segment member 200 turned to one side (see Fig. and that the change of position may only be accomplished by closing the fluid passage 400 by means of the said ball plug 402 which will allow the fluid Withinthe chamber 354 to pass out by the passage388 allowing it to flow through the pipe I82, so that, when said rod member 2I0 is again actuated and the ball plug is liftedoff the passage 400 the said fluid will again flow into said chamber 354 causing the piston 330 to actuate and the finger member 202 will again move forward engaging the opposite side end 352 of the said segment member 200 and will cause said segment and the yoke 266 to be turned oppositely to the former position, and thereby causing the fluid passing through the direction regulation member I98 to change accordingly its direction of flow, for the purpose desired.

As shown in Figs. 10, 11, and 12 the position of all the working parts of the apparatus, which is the regulating member I98, the relay member 204, and the centralizing valve member 208 are practically in a neutral position, while the Figs. 13 and 15 show the parts of the apparatus in a position which will cause the fluid flow to be governed and directed as desired.

In this respect, when the yoke 266 is turned to the.right, as shown in Fig. 13, the shank of the regulating valve 258 pulled by the pin 262 is directed to one side and the guide pins 214 and 216 are guided within the sockets 218 and 280 in the same direction, which causes the valve disc 212 to bear upon the valve seat 246, also, at the same time the said spring 256 will cause the valve member 248 to move in same direction causing the valve disc. 250 to bear upon the valve seat 230,

When in such position, the fluid passing through the inlet pipe I16 and entering the chamber 2I8 will flow through the passage 238 and through the interconnecting fluid passage 222 entering the pipe 83 which leads to the subchamber flowing into the rear compartment 26' of the cylinder chamber 22 and causing the piston head member 28 to move toward the front end 24 of the said cylinder.

While the fluid enters one side of the said piston head 28 the fluid remaining in the cylinder 22 at the opposite side of said piston head 28 passes from the front chamber 24 through the passage 68, entering into the pipe 10 which connects with the pipe and passage of the said fluid direction regulating member I98, flowing into the inter-connecting passage 220 then passing through the passage 240 enters the fluid discharge chamber 224 which is provided with the fluid discharge pipe I80 leading to the outlet pipe I84.

Therefore, it may be noted that when actuating the segment member 200 in the opposite direction causing said yoke 268 and the regulating valve 258 including the valve member 248 to move to the left, the fluid will pass reversedly within said cylinder 2 allowing the fluid, under pressure, to enter the said inlet pipe I16 flowing into the pipe 10, which will cause the piston head 20 .to force the fluid out of the chamber 26 into the pipe 88 and then through the discharge pipe I80 and the outlet I84.

The reciprocal movement of the said piston head 28 within said cylinder 2, from one end to the other, causes the piston rod 16 together with the guiding collar I02 to follow the same direction, and, because the cross bars II8 are connected to the said collar I02 by meansrof the screw I06, the front section of said stroke reduction means H0, positioned between the said collar I02 and the stud member I24, will correlatively extend the position of said collar I02 as far as the piston stroke will permit, thus causing the remaining cross bars I22, at the rear section of the said stroke reduction means I I0 positioned between the said collar I02 and the slidingbushing 532, which slides over said pipe I8, to-assume a parallelly similar position movement of which is the contraction or extension, and will cause the guiding bar I36 attached thereto to move the said door I08 into a closing or opening position. g

When the door I08 is in upright position over the door-way the flattened end I38 of the guiding bar I36 is forced under the angle edge-I68 of the plate member I64 which holds the said door I08 in position and preventing its opening, unless the said bar I30 releases the hold, as hereinbefore mentioned.

In reducing the piston speed within said cylinder 2, by preventing the fluid to flow from the cylinder chamber 26 and through the pipe 88 during the end of the forward stroke, that is when the door I08 is closing, or at least two inches before it stops, the shank "I8 of the compensating collar 14, originally pressed outwardly by means of the spring 12, obstructs the areaof the sub-chamber 80 and when in its forward movement the said collar I4 is stopped by the shoulder 8|, which slows down the piston speed causing the fluid flow to become partially restricted, and allowing the fluid to pass only through the space allowed by the diametrical difference provided by the hole in the collar I4 and the piston rod 16, which is approximately .005 of an inch, then, when the spacing collar 35 is moved into the control chamber I2 the spring 12 is compressed, allowing the end of the said collar 82 of the bracket flange 86 to abut against the piston washer 34 and thereby stopping the further piston movement Within said cylinder 2.

Also in reducing the piston speed by preventing the fluid to flow from the chamber 24 and through the passage 68 and the pipe ill, during the backward piston stroke, when the door is opening and for slowing it down at least two inches before the piston 23 will stop, in its operation, the plunger extension 52 is held in its outmost position by the spring 53, and when the stopper 56 guided by the plug 62 reaches and enters the passage 68, the fluid flow is considerably reduced allowing only a restricted amount to pass through the slot 66 during the remaining movement of the said piston as may be perand in line for operation, which when pressed against the bellows 369 by the push button I92, it will in turn actuate the control valve H2 and thereby allow the fluid to flow into the chamber 26 of the cylinder 2, and, While the said door is moving into an open position, the centralizing valve 238, by support of the spring Git actuating the rod 2E0 opens the passage 338 allowing the fluid within the chamber 355 of the relay member 23 to flow out and thereby causing the finger member 2&2 to become re-adjusted in readiness for operation, so that for closing of the said door W8, from the outside, all that is necessary is to push the said push button I92 again, which will cause the fluid to flow into the said chamber 356 and thereby actuating finger member 282 including the segment member 280 for causing the piston member 23 to reverse its movement.

However, when it is required and necessary to close the door I68 from the inside, only the auxiliary rod member H2 is used, by pulling same, which will actuate the centralizing valve 208 and the relay member 236 in a similar manner as before described.

Then, should it be necessary to open the said door from the inside, without the aid of the remote valve control I88, the said auxiliary rod member H2 is used by pulling same, which will cause the apparatus to operate in the proper manner and for closing said door again from the outside it" is necessary to push the said auxiliary rod member 2 l2 which operation will reset the controlling rod 375, that is, by allowing the undercut 544 to wedge in the bottom side of said centralizing hole 556 which position will cause the upper part of the said abutment end 414 to rest against the spacing plate 482, it being supported in such position by the pulling action of said spring 543 and thereby placing it in line with the point end 549 of the said push button [92, so that the said door may be closed from the outside without the use of the key.

While I have thus described my invention with great particularity, it will be clear, that the same may be modified throughout a wide range. I accordingly do not propose to be limited to the exact details of construction herein shown on the drawings and described in the specification, but reserve the right in practice to make necessary changes and modifications therein which may come within the scope of the appended claims.

I claim as my invention;

1. In a door operating apparatus having a cylinder and a piston reciprocally operated therein also having a piston rod connected to said piston including having a guide rod connecting said piston rod for operating said door into its open or closed position, the combination of, a source of fluid supply, a fluid control valve means connected to said cylinder and connected with said source of fluid supply for controlling the fluid flow therethrough and through said cylinder a fluid relay control means, a fluid flow centralizing member connecting said fluid relay control means, a rectifying bellows connecting said fluid flow centralizing member for controlling the flow of the fluid into said fluid relay control means, a manually operating fluid flow control means interconnecting said rectifying bellows and said fluid control valve means for controlling the fluid flow therethrough, and a safety lock means connected to said manually operating fluid flow control means for controlling the fluid flow through said apparatus and for controlling the operation of said fluid control valve means, substantially as described.

2. The combination as described comprising a mounted cylinder, a fluid flow control passage disposed at each end of said cylinder, a piston head in said cylinder, a piston rod connected to said piston head, a guiding rod interconnecting said piston rod and the door for holding it in its open or closed position, a stroke reduction member connecting said guiding rod and said piston rod for reducing the stroke of the piston head in said cylinder, locking means disposed at the end of said guiding rod and at the connection to said door for holding said door in locked position, in combination with, a fluid conduit pipe connecting said cylinder for supplying the fluid therein, a fluid control valve means connecting said fluid conduit pipe for directing the fluid into and out of said cylinder, a source of fluid supply connecting said fluid control valve means for supplying the fluid into said cylinder, a manually operating fluid flow control means interconnecting said fluid control valve means for controlling the fluid flowtherethrough, and a safety lock means connected to said manually operating fluid flow control means for controlling the fluid flow through said fluid conduit pipe and for controlling the operation of said fluid control valve means, substantially as described.

ROBERT E. PETERSON. 

